Methods for performing a coronary artery bypass graft on a beating heart. Thoracoscopic visualization is used to view at least one of the steps of the procedure that include locating a target artery for an arterial blood supply; introducing instruments through one or more small openings in the patient's...http://www.google.es/patents/US6332468?utm_source=gb-gplus-sharePatente US6332468 - Method for coronary artery bypass
